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Finding the Fourth Proportional to 554,665.13, 765,372.01 and 312,933.59

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Solution

The fourth proportional to 554,665.13, 765,372.01 and 312,933.59 is: 431,811.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,665.13 : 765,372.01 = 312,933.59 : x
  2. Step 2: Convert to fraction form
    554,665.13/765,372.01 = 312,933.59/x
  3. Step 3: Cross multiply
    554,665.13x = 765,372.01 × 312,933.59
  4. Step 4: Simplify right side
    554,665.13x = 239,510,610,774.82
  5. Step 5: Solve for x
    x = 239,510,610,774.82/554,665.13
  6. Step 6: Final answer
    x = 431,811.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.